Window-operating device



C.' I. GOLIJBLATT.

WINDOW OPERATING DEVICE. APPLICATION FILED MAR. I0. I92YI.

Patented July 4, 1922 2 SHEETS-SHEET l.

IIIIHI l IIIIIIII J.

C. I. GOLDBLATT. WINDOW OPERATING DEVICE.

' APPLICATION FILED NAN. ID, 1921. 1,42,938 Patented July 4, 1922.

2 SHEETS-SHEET 2.

a INDIEN/EVS itil.

CHARLES I. GOLDBLATT, OF BROGELYI, NEW' YORK.

WINBOW-OPERATING DEVCE.

Application led March 10, 192i.

T0 all cli/20m t may concern.'

Be it known that l, CHARLns lsnAnL GOLD- BLATT, a citizen of the United States, and a resident of the city of New York, borough Vof Brooklyn, in the county of Kings and I nism for raising or lowering window sashes.

A still further object is to provide an operating mechanism, which will be simple and practical in construction, durable and efficient in use, and to suggest one practical method of applying the apparatus to a conventional form of window sash. Y

TWith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims. Y

ln the accompanying drawings:

Figure 1 is a somewhat diagrammatic view in front elevation with parts broken away for clearness, illustrating my improved operating mechanism in applied position;

Figure 2 is a view in section on the line 2-2 of Figure 1; and

Figure 3 is a sectional detail view of one of the operating valves.

Referring more specifically to the drawings, 1 represents a window frame, in which an upper sash member 2 and a lower sash member 3 are slidable vertically one behind the other. l

The side members 4L of the frame 1 are preferably hollow and each of these members accommodates a pair of tanks such as 5 and 5 respectively, extending from the top to the bottom of the members. In the upper ends of the tanks 5, pulleys 6 are mounted and iiexible devices 7 are opera- Specification of Letters Patent.

Patented July et, 1922.

Serial No. 451,186.

9 represents a water supply pipe and 10 a valve, controlling the iiow of water through the pipe 9. The pipe 9 is connected with -any suitable source of supply (not shown).

Branch supply pipes 12 lead from the supply pipe 9 and communicate with the lower ends of the tanks 5. A main outlet pipe 13 is connected by branch pipes 14 to the lower ends of the tanks 5. Flow through the outlet pipe is controlled by a valve 15 similar to the valve 10.V Over-How pipes 16 communicating with the upper ends of the tanks 5 empty into the pipe 13 below the valve 15.

The theory of operation is as follows The weights or counterbalances 8 are together heavy enough to overcome the weight of the sash 3 and the friction between the sash and its frame, so that when the tanks 5 are empty, the counterbalances 8 will rest on the bottom of the tanks and hold the sash 3 in elevated position. It is a well recognized principle, however, that a body immersed in fluid loses an amount ofweight equal to that of the fluid which it displaces. The weights 8, therefore, while sufficiently heavy to normally retain the sash in its elerated position, will quickly cease to be effective when the tanks are Hooded to partially immerse them, and when the tanks 5 are flooded by opening the valve 10, the sash will descend to the position illustrated in the drawings. In other words, when the tanks 5 are empty, operation of the valve 10 will lower the sash and when the sash is in lowered position, operation of the valve 15' will raise it to any desired height.

The upper sash 2 is operated on the same principle, Pulleys 16 are mounted in the upper ends of the tanks 5. Flexible devices 17 are operatively connected at one end to the upper sash 2 and are run over the pulleys 16. Counterbalances 18 are suspended on the free ends of the flexible devices 17 and are located in the tanks 5. 19 represents a water supply pipe controlled by a valve 20 and connected by branch pipes 21 with the lower ends of the tanks 5. A main outlet pipe 22 is controlled by a valve 23. Outlet pipes 24 leading from the lower ends of the tanks 5 communicate with the pipe 22 above the valve 23 and a pair of over-tlow pipes 25 are provided and likewise communicate with the main outlet pipe 22.

in this instance, the uppe 1 sash is retained in its normal elevated position when the tanks 5 are empty and flooding of these ,gravity 11.1 .the frametanks will cause the sash 2 to fall by gravity to any desired position.

Very obviously, the particularl construction of the valves 10, l5, 2O and 23 is immaterial to this invention. All of these valves `are similar in construction and I have shown in Figure 3, the details of construction of the valve l() merely for the purpose of illustrating 4one form Iof valve, which will perform Vthe desired function.

.this figure, 26 represents a Valve casing lecated in the pipe 9. A partition 27 is provided across the valve casing and is formed with a valve seat 2S. A spring held poppet valve controlling the flow of water through the pipe 9 is normally retained in position on the seat by a spring 30 around the valve stenil. The stem v,31 is appreciably elongated andterminates in a push button or `other lian`dle.memb er such as 32,y for operat- 7ing the stem, to permit a Vflow through the Pire 9- installing my improved apparatus, .the various inlet and outlet pipes will be concealed in a`,\vall,` so that only the push buttons for operating the valves are visible, Vas seen Figure y2'. i

l have illustrated vone of the preferred embodiments lof lmy invention. .Obviously various slight changesand alterations might be made in kthe general form and arrange- 4mevntnof the parts ldescribed and Khence I do ,not wish to limit myself tothe precise details set forth, but shall consider ymyself at libs erty to make such slightchanges and alterations as fairly fall within the spirit and .Saone Off .the ,appended dams- I claim: i"

Y `l. The combination with ,a frame and ,a member slidable .vertically in the frame, of 1a counterblalance normally retaining said member infelevated osition, a ,flexibledevice kc,@meeting the ,slida le memberand the counterweight, and .means for partially immersing the counterbalance in ,a fluid, whereby the weight of the sliding lx'neniber will preponderate and said me' y,ber will slide by 2l The ycombination with la closure frame and closure slidable vertically in the frame, ,of a tanln'a flegrible ,device operatively connected at one end tothe closure, a counterbalance located in the tank and suspended on the other end of the' flexible device, and means for introducing fluid into the tank to reduce theweight of the counterbalance and permit the closure to descend by gravity.

3. The ,combination with a window frame and a sash slidable vertically in the frame, of a tank located on each side of the frame, pulleys mounted in the upper ends Vof the tanks, fiexible devices having their intermediate portions located over the pulleys and `operatively connected at one end to the sash, counterbalances in the tanks suspended on the other ends of the flexible devices and normally retaining `the sash in elevated position, fluid inlet and outlet pipes communicating with the tanks, valves controlling the Vflow of 4fluid through said pipes, and means whereby vthe introduction of fluid into the tanks will cause the sash to descend gravity.

fl. A device of the character described in claim l, and ineluding over-flow pipes communicating with the upper ends of the tanks.

5. The `Acombination with a frame, of pair of sashes slidahle vertically in the frame, a pair of eounterbalances operatively connected to each sash and tending to hold both ofsaid sashes in elevated position, independent means for immersing either pairof counterbalances in a fluid, and means Whereby the immersion of the 'oounterbalances causes the sashes to which they are attached to descend .by gravity. Y,

`6. The combination with a frame, of a rpair of sashes slidable vertically in the frame, a pair of counterbalances operatively connected to each sash and tending .to held vbotlhofpsaidsashes in elevated position, indeoi-iARLns i. GoLnBLi/irr. 

